Urea nitrogen analyzer



FIG. 1 is a front perspective of a urea nitrogen analyzer, showing our new design;

FIG. 2 is a front elevation thereof;

FIG. 3 is a side elevation as seen from the left of FIG. 1;

FIG. 4 is an elevation as seen from the side opposite of FIG. 3;

FIG. 5 is a top plan view;

FIG. 6 is a rear elevation thereof; and

FIG. 7 is a view similar to FIG. 1 of an alternative embodiment of our new design depicted with transparent containers. 

The ornamental design for an urea nitrogen analyzer, as shown and described. 